The Body Mass Index — a number, calculated from your height and weight, used by doctors to identify potential weight problems — is a flawed screening tool. Numerous studies have pointed to its limitations in the past, but an investigation published in PLoS ONE this April suggests that the use of BMI by physicians to…

Tomorrow, as you are almost certainly aware, is Valentine's Day. For some of us, this a particularly blissful time of year. For others it's one that calls for intense cynicism. But regardless of your stance on Valentine's Day, there's no way to avoid being bombarded with romantic imagery. So you might as well take…